Requests.cpp

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#pragma once
#define WIN32_LEAN_AND_MEAN
 
#include <Requests.h>
 
#include "../IBaseApi.h"
 
#include <sstream>
 
#include <mutex>
 
#include <Poco/Net/HTTPSClientSession.h>
#include <Poco/Net/HTTPRequest.h>
#include <Poco/Net/HTTPResponse.h>
#include <Poco/StreamCopier.h>
#include <Poco/Path.h>
#include <Poco/URI.h>
#include <Poco/Exception.h>
#include <Poco/UTF8String.h>
#include <Poco/NullStream.h>
#include <Poco/Net/SSLManager.h>
#include <Poco/Net/InvalidCertificateHandler.h>
#include <Poco/Net/RejectCertificateHandler.h>
 
namespace API
{
    class Requests::impl
    {
    public:
        void WriteRequest(std::function<void(bool, std::string)> callback, bool success, std::string result);
 
        Poco::Net::HTTPRequest ConstructRequest(const std::string& url, Poco::Net::HTTPClientSession*& session,
            const std::vector<std::string>& headers, const std::string& request_type);
 
        std::string GetResponse(Poco::Net::HTTPClientSession* session, Poco::Net::HTTPResponse& response);
 
        void Update();
    private:
        struct RequestData
        {
            std::function<void(bool, std::string)> callback;
            bool success;
            std::string result;
        };
 
        std::vector<RequestData> RequestsVec_;
        std::mutex RequestMutex_;
    };
 
    Requests::Requests()
        : pimpl{ std::make_unique<impl>() } 
    { 
        Poco::Net::initializeSSL();
        Poco::SharedPtr<Poco::Net::InvalidCertificateHandler> ptrCert = new Poco::Net::RejectCertificateHandler(false);
        Poco::Net::Context::Ptr ptrContext = new Poco::Net::Context(Poco::Net::Context::TLS_CLIENT_USE, "", "", "", Poco::Net::Context::VERIFY_NONE, 9, false, "ALL:!ADH:!LOW:!EXP:!MD5:@STRENGTH");
        Poco::Net::SSLManager::instance().initializeClient(0, ptrCert, ptrContext);
 
        game_api->GetCommands()->AddOnTickCallback("RequestsUpdate", std::bind(&impl::Update, this->pimpl.get())); 
    }
 
    Requests::~Requests() 
    { 
        Poco::Net::uninitializeSSL();
        game_api->GetCommands()->RemoveOnTickCallback("RequestsUpdate"); 
    }
 
    Requests& Requests::Get()
    {
        static Requests instance;
        return instance;
    }
 
    void Requests::impl::WriteRequest(std::function<void(bool, std::string)> callback, bool success, std::string result)
    {
        std::lock_guard<std::mutex> Guard(RequestMutex_);
        RequestsVec_.push_back({ callback, success, result });
    }
 
    Poco::Net::HTTPRequest Requests::impl::ConstructRequest(const std::string& url, Poco::Net::HTTPClientSession*& session,
        const std::vector<std::string>& headers, const std::string& request_type)
    {
        Poco::URI uri(url);
 
        const std::string& path(uri.getPathAndQuery());
 
        if (uri.getScheme() == "https")
            session = new Poco::Net::HTTPSClientSession(uri.getHost(), uri.getPort());
        else
            session = new Poco::Net::HTTPClientSession(uri.getHost(), uri.getPort());
 
        Poco::Net::HTTPRequest request(request_type, path, Poco::Net::HTTPMessage::HTTP_1_1);
 
        if (!headers.empty())
        {
            for (const auto& header : headers)
            {
                const std::string& key = header.substr(0, header.find(":"));
                const std::string& data = header.substr(header.find(":") + 1);
 
                request.add(key, data);
            }
        }
 
        return request;
    }
 
    std::string Requests::impl::GetResponse(Poco::Net::HTTPClientSession* session, Poco::Net::HTTPResponse& response)
    {
        std::string result = "";
 
        std::istream& rs = session->receiveResponse(response);
 
        if (response.getStatus() == Poco::Net::HTTPResponse::HTTP_OK)
        {
            std::ostringstream oss;
            Poco::StreamCopier::copyStream(rs, oss);
            result = oss.str();
        }
        else
        {
            Poco::NullOutputStream null;
            Poco::StreamCopier::copyStream(rs, null);
            result = std::to_string(response.getStatus()) + " " + response.getReason();
        }
 
        return result;
    }
 
    bool Requests::CreateGetRequest(const std::string& url, const std::function<void(bool, std::string)>& callback,
        std::vector<std::string> headers)
    {
        std::thread([this, url, callback, headers]
            {
                std::string Result = "";
                Poco::Net::HTTPResponse response(Poco::Net::HTTPResponse::HTTP_BAD_REQUEST);
                Poco::Net::HTTPClientSession* session = nullptr;
 
                try
                {
                    Poco::Net::HTTPRequest&& request = pimpl->ConstructRequest(url, session, headers, Poco::Net::HTTPRequest::HTTP_GET);
 
                    session->sendRequest(request);
                    Result = pimpl->GetResponse(session, response);
                }
                catch (const Poco::Exception& exc)
                {
                    Log::GetLog()->error(exc.displayText());
                }
 
                const bool success = (int)response.getStatus() >= 200
                    && (int)response.getStatus() < 300;
 
                pimpl->WriteRequest(callback, success, Result);
                delete session;
                session = nullptr;
            }
        ).detach();
 
        return true;
    }
 
    bool Requests::CreatePostRequest(const std::string& url, const std::function<void(bool, std::string)>& callback,
        const std::string& post_data, std::vector<std::string> headers)
    {
        std::thread([this, url, callback, post_data, headers]
            {
                std::string Result = "";
                Poco::Net::HTTPResponse response(Poco::Net::HTTPResponse::HTTP_BAD_REQUEST);
                Poco::Net::HTTPClientSession* session = nullptr;
 
                try
                {
                    Poco::Net::HTTPRequest&& request = pimpl->ConstructRequest(url, session, headers, Poco::Net::HTTPRequest::HTTP_POST);
 
                    request.setContentType("application/x-www-form-urlencoded");
                    request.setContentLength(post_data.length());
 
                    std::ostream& OutputStream = session->sendRequest(request);
                    OutputStream << post_data;
 
                    Result = pimpl->GetResponse(session, response);
                }
                catch (const Poco::Exception& exc)
                {
                    Log::GetLog()->error(exc.displayText());
                }
 
                const bool success = (int)response.getStatus() >= 200
                    && (int)response.getStatus() < 300;
 
                pimpl->WriteRequest(callback, success, Result);
                delete session;
                session = nullptr;
            }
        ).detach();
 
        return true;
    }
 
    bool Requests::CreatePostRequest(const std::string& url, const std::function<void(bool, std::string)>& callback,
        const std::string& post_data, const std::string& content_type, std::vector<std::string> headers)
    {
        std::thread([this, url, callback, post_data, content_type, headers]
            {
                std::string Result = "";
                Poco::Net::HTTPResponse response(Poco::Net::HTTPResponse::HTTP_BAD_REQUEST);
                Poco::Net::HTTPClientSession* session = nullptr;
 
                try
                {
                    Poco::Net::HTTPRequest&& request = pimpl->ConstructRequest(url, session, headers, Poco::Net::HTTPRequest::HTTP_POST);
 
                    request.setContentType(content_type);
                    request.setContentLength(post_data.length());
 
                    std::ostream& OutputStream = session->sendRequest(request);
                    OutputStream << post_data;
 
                    Result = pimpl->GetResponse(session, response);
                }
                catch (const Poco::Exception& exc)
                {
                    Log::GetLog()->error(exc.displayText());
                }
 
                const bool success = (int)response.getStatus() >= 200
                    && (int)response.getStatus() < 300;
 
                pimpl->WriteRequest(callback, success, Result);
                delete session;
                session = nullptr;
            }
        ).detach();
 
        return true;
    }
 
    bool Requests::CreatePostRequest(const std::string& url, const std::function<void(bool, std::string)>& callback,
        const std::vector<std::string>& post_ids,
        const std::vector<std::string>& post_data, std::vector<std::string> headers)
    {
        if (post_ids.size() != post_data.size())
            return false;
 
        std::thread([this, url, callback, post_ids, post_data, headers]
            {
                std::string Result = "";
                Poco::Net::HTTPResponse response(Poco::Net::HTTPResponse::HTTP_BAD_REQUEST);
                Poco::Net::HTTPClientSession* session = nullptr;
 
                try
                {
                    Poco::Net::HTTPRequest&& request = pimpl->ConstructRequest(url, session, headers, Poco::Net::HTTPRequest::HTTP_POST);
 
                    std::string body;
 
                    for (size_t i = 0; i < post_ids.size(); ++i)
                    {
                        const std::string& id = post_ids[i];
                        const std::string& data = post_data[i];
 
                        body += fmt::format("{}={}&", Poco::UTF8::escape(id), Poco::UTF8::escape(data));
                    }
 
                    body.pop_back(); // Remove last '&'
 
                    request.setContentType("application/x-www-form-urlencoded");
                    request.setContentLength(body.size());
 
                    std::ostream& OutputStream = session->sendRequest(request);
                    OutputStream << body;
 
                    Result = pimpl->GetResponse(session, response);
                }
                catch (const Poco::Exception& exc)
                {
                    Log::GetLog()->error(exc.displayText());
                }
 
                const bool success = (int)response.getStatus() >= 200
                    && (int)response.getStatus() < 300;
 
                pimpl->WriteRequest(callback, success, Result);
                delete session;
                session = nullptr;
            }
        ).detach();
 
        return true;
    }
 
    bool Requests::CreateDeleteRequest(const std::string& url, const std::function<void(bool, std::string)>& callback,
        std::vector<std::string> headers)
    {
        std::thread([this, url, callback, headers]
            {
                std::string Result = "";
                Poco::Net::HTTPResponse response(Poco::Net::HTTPResponse::HTTP_BAD_REQUEST);
                Poco::Net::HTTPClientSession* session = nullptr;
 
                try
                {
                    Poco::Net::HTTPRequest&& request = pimpl->ConstructRequest(url, session, headers, Poco::Net::HTTPRequest::HTTP_DELETE);
 
                    session->sendRequest(request);
                    Result = pimpl->GetResponse(session, response);
                }
                catch (const Poco::Exception& exc)
                {
                    Log::GetLog()->error(exc.displayText());
                }
 
                const bool success = (int)response.getStatus() >= 200
                    && (int)response.getStatus() < 300;
 
                pimpl->WriteRequest(callback, success, Result);
                delete session;
                session = nullptr;
            }
        ).detach();
 
        return true;
    }
 
    void Requests::impl::Update()
    {
        if (RequestsVec_.empty())
            return;
 
        RequestMutex_.lock();
        std::vector<RequestData> requests_temp = std::move(RequestsVec_);
        RequestMutex_.unlock();
 
        for (const auto& request : requests_temp) { request.callback(request.success, request.result); }
    }
} // namespace API